“If you have nothing to do, please do not do it here.”
There’s something so politely philosophical about this phrasing—like a subtle comment on the lives of non-doers. “No judgment, but please take your inactive self elsewhere. Or, if staying here, please consider doing something instead of nothing.” The Bengali translation is interesting too if you read the original post (linked below), and, as always, the readers’ comments are informative as well.
Thanks, Language Log.